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<br />", <br /> <br />1045 <br /> <br />by the ski area. Efficiency will be assumed to be 30 percent, with return flows lagged <br />according to the lag pattern used for Phase II snowmaking diversions. <br />2. Boyle: Summarize the non-irrigation use in the Phase II model under the historical demand <br />scenario using the .xcu report Detennine average monthly values (12 values, one for each <br />month) over the study period. <br />3. Boyle: Based on general spatial distribution of M&I use, subdivide the basin into <br />~approximately four areas. One node will be used to simulate the aggregated effects of <br />aepletion for M&I use within that subdivision. <br />4. Boyle: Summarize the water use reflected by the Consumptive Uses Model for "Other Uses" <br />on an average monthly basis (12 values, one for each month) by <;:ounty/HJJC and ~~~i~ <br />to appropriate basin subdivision. ' - <br />5, Boyle: Group the non-irrigation uses from the .xcu report into the same spatial groupings <br />as determined by the Consumptive Uses Model for "Other Uses" and sum. <br />6. Boyle: Calculate the difference between the non-irrigation uses in the common groups <br />derived from the Consumptive Use Model and the Phase II model, taking into account the <br />"new" snowmaking demands identified above. No further activity in a common group will <br />be performed if the difference is negative. <br />7, Boyle: Brief State team on spatial aggregation of the Phase III M&I uses and incorporate <br />their input as appropriate, before completing task. The State will review M&I aggregation <br />at interim stage, before model files are edited. <br />8. Boyle: Assign a senior water right administration number to reflect their highest priority <br />use status. <br />9, Boyle: Manually edit Statemod input files (.rin, .dds, ,ddr, ,ddh, .ddm, etc.) <br />10, Boyle: Prepare Task Memorandum 3.10 describing the results of the previous step, The <br />memo will include the following: <br />· Demands for snowmaking uses not modeled in Phase II, and their location in the <br />stream network. <br />· Description of methods and result of the difference calculations between Phase II <br />M&I demands and the Consumptive Use model for "Other Uses", <br />· Location and amounts of aggregated M&I demand nodes and their assigned water right <br />administration number. <br />· Procedures for and the results of the monthly distribution of the explicitly modeled <br />Phase II M&I demands applied to annual aggregated demands obtained by the <br />difference calculations, <br />Boyle will prepare a draft memo on which the State will provide written comments within <br />two weeks of receipt. Boyle will finalize the memo within two weeks of receiving the <br />State's comments. <br /> <br />Deliverables: <br />1, Estimates of snowmaking demands not modeled in Phase II. <br />2, Summary of M&I consumptive uses modeled in Phase II separated by County/HUC, <br />3, Location of four nodes to superimpose M&I demands to be modeled in Phase III. <br />4, Summary of M&I consumptive uses for Yampa River Basin from Consumptive use report <br />as divided by County/HUe. ' <br /> <br />Phase III. Scope of Services <br /> <br />A-35 <br /> <br />June 12, 1996 <br /> <br />